The Ford Expedition should already be grounded properly, but we will check that. Start with the vehicle and work back to the trailer. We can eliminate the vehicle as the source of the problem pretty easily.
Disconnect the trailer and have someone sit in the driver seat. Take a circuit tester, like part # PTW2993, and test the Expedition connector. Clip the alligator clip onto the exposed post of the connector, this is the white wire and should be your ground. Have someone turn on the... view full answer...
I would first spend a few minutes trying to trace the wires feeding that 4-pole trailer connector you found. If the white ground wire had come loose from its connection with the RV frame or chassis, it would explain why you're not getting any voltage at the connector.
If that fails, you'll need to simply hardwire in a new trailer connector like part # 18002. The green wire would tap into the right turn signal circuit, the yellow wire into the right turn circuit signal and the brown wire... view full answer...
The problem that you have with the 7-Way on your 1999 Ford Expedition could be a dirty or corroded trailer connector. Make sure that the connector is clean and free of corrosion inside, where the wires attach, and outside on the pins themselves. Also check for loose or damaged wires and fix as needed.
If you still have problems then it could be a fuse or relay related to the tow package wiring. There are several on your Expedition:
In-cab fuse box:
Location 23 for trailer tow battery... view full answer...
The key to purchasing the correct weight distribution system and sway control is choosing a system that is compatible with the tongue weight of your trailer. So it is important to know the tongue weight of your trailer when it is fully loaded and ready to tow. With that being said, I have attached an article on determining trailer tongue weight for you to review.
If the tongue weight of your trailer is greater or less than the tongue weight range on your weight distribution system, then... view full answer...
When a brake controller works with the manual override lever but not with the brake pedal that usually indicates a problem along the red wire. In this case, since it is a plug-in harness, it is not likely that the red wire is in the wrong location. But just to be sure the red wire should be in between the black and blue wires on the end that plugs into the vehicle.
The most likely culprit is a blown stop light or CHMSL fuse. Use the owners manual to find the location of the fuses to check... view full answer...
The wiring harness on the trailer side is what is called a wishbone harness. It splits the running light signal so that you do not have to run a jumper wire from one side to the other. The yellow/brown wire is for the left side running lights and the green/brown is for the right side running lights. That could be what the problem is if you wired it differently.
Make sure that the trailer lights are grounded to a clean and corrosion free location of the trailer frame. Also check to make... view full answer...
What is happening is that the light in trailer hitch cover # CR-007F does not draw enough power so it confuses the tow package wiring on your 2016 Ford Expedition. There is an adapter you can use, # C35FR, that simulates more load and should solve the problem.
The other option is to install load resistors, such as # DI34ZR, in line with the light wiring. You would need one for each circuit (3 total). view full answer...
Since you have already tried extensively cleaning your trailer connector with sandpaper and electronics cleaner to no avail, it sounds like it may just be damaged and need replacing. You can cut off your trailer connector and replace it with the Hopkins 7-Way RV Style Connector # H20046; I also strongly recommend using Dielectric Grease # 11755 which is going to prevent corrosion and seal your connection.
Additionally, make sure to inspect the power wires to the magnets and look for wires... view full answer...
At the rear frame rail there are a few wires that you'll need to run to the 7-way as they most likely aren't complete like you have found. Typically connecting those wires to the 7-way will be all that's needed but sometimes the circuits aren't active. Since it's an OEM controller contacting Ford would be best option.
You may need to run a length of 10 gauge wire (part # 10-1-1) from the brake output circuit of the controller to the brake output circuit of the 7-way (blue wire). The... view full answer...
Sounds like the motor may be bad and overdrawing the circuit and popping the circuit. For that we have the part # LC352338 since you have a Lippert stabilizer jack setup. view full answer...
If you have tested the pin for the right turn signal at the trailer connector, have you used a circuit tester to probe the wire that feeds the connector? If you get no signal there, you most likely have a blown fuse.
Typically, the fuses that protect the towing circuits are located in a fuse box in the engine compartment. Your owners manual should have more specific information about the fuse location. view full answer...
We have a way for you to figure this out! It doesn't include diagrams, but we can get it.
Unfortunately, your 2004 Ford Expedition doesn't have any documentation on what each wire's function is. The best I can do for diagrams is link to a help article that has color standards for 7-ways. Those can change from manufacturer to manufacturer, but you can get an idea for what the wires are supposed to do.
The best thing to do disconnect the old connector and the new one (if you've already... view full answer...
I checked with the instructions of the Tekonsha P3 Proportional Brake Controller # 90195 and the possible causes for the lack of a trailer connection are following:
1. Trailer not connected to tow vehicle. Try wiggling the trailer connector to make sure that it is seated all the way into the vehicle connector.
2. Trailer connected with open circuit on the brake line. Check the wiring of the brake output circuit on both your 2008 Ford Expedition and your trailer. If you find loose wiring... view full answer...
I can't find a fuse number for your vehicle tail lights in your owners manual. You may want to check your parking lamp fuse number 22 and 43. If you are referring to your trailer you will want to check fuses 18, 24, 28, and 33. You will also want to check relay 37 and 38 and 45.
There is also a good chance that you have a ground wire that needs to be cleaned for your brake lights. I recommend using a circuit tester like # PTW2993 to test function of lights when you have a good ground... view full answer...
If you have self-adjusting assemblies like the Dexter Nev-R-Adjust Brake Kit # 23-468-469 installed on your trailer, they will indeed continue to adjust as you pull the trailer around. It does sound like you performed the initial manual adjustment correctly, so you should see improved performance as you continue to use them. Driving around in a parking lot and using the brake controller's manual override like you mentioned is a good way to do this.
Otherwise, since the brakes were recently... view full answer...
There isn't a way to use sway control on a boat trailer with a pivoting surge actuator/coupler. If you are experiencing sway the best way to fight that is to increase tongue weight on the trailer (hard to do with a boat), or if the ball mount being used makes trailer sit too nose high going with a different ball mount can help. Using one that allows the trailer to sit as level as possible would be what you would want. I attached a help article that covers this for you to check out as well. view full answer...
To determine why you do not have a tail light signal at your 4-way trailer connector, you will want to check a few things. If you have a factory installed 4-way connector on your 1999 Ford Expedition, then you will want to check fuse number 5 and relay number 201. This is the fuse and the relay that control the running light function on your trailer wiring harness.
If you replace the fuse and relay and still have the problem or if you have an aftermarket wiring harness installed, then... view full answer...
The 13 might be the E1 error only displaying upside down for some reason. If this continues to happen even after a trailer is connected then there are some things you can check.
The vehicle side trailer connector might be dirty or corroded causing the errors on your brake controller. Check the vehicle side trailer connector for dirt or corrosion in the connector that may be causing your connection problem. Corrosion can also build up behind the connector where the wires attach.
Next,... view full answer...
It should have been hooked up and fully functional from the factory. Some times there is a wire that will need to connected, but that is only on vehicles that do not have the 7-Way from the factory, but are pre-wired for them.
Which pin are you checking on the 7-Way? As you face the 7-Way on the vehicle, it should be the pin at the 1:00 position. The center contact is for reverse lights. Also, is the Expedition on or off when you are testing the wiring? I have added a link to a wiring... view full answer...
It sounds to me like you may have a blown fuse. I would start by checking the fuses in the fuse box under the hood. There should be a legend under the lid of the fuse box that tells you each fuses function. You should also check the connector itself for corrosion that can sometimes build up and create a short strong enough to cause functions to stop operating correctly. If this is not the case and the vehicle brake/turn signals are working then you will need to use a circuit tester, item... view full answer...
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